This code is for the LR pressure switch sens circuit. The switch is part of the TRS/solenoid block inside the transmission. (I presume at least that you have the 5-45RFE transmission with the 4.7L). The problem could be wiring or TCM, but mostly its the pressure switch itself and need a new solenoid assy.
SOURCE: 2002 wj jeep grand cherokee p1756
The governor pressure sensor is the most likley cause however an inspection of fluid or debris in trans pan would be a good idea to make sure there's nothing excessive in it. Attached is a list of possible causes however the senor would be the most common.
POSSIBLE CAUSES
SOURCE: Radiator fan will not turn off in my 2000 Jeep Grand Cherokee
usually the engine relay or cooling fan relay..!
SOURCE: overhead console completely dead 2002 jeep grand cherokee laradeo
Check the fuses for the overhead console, could be that if not then the console needs to be replaced.....
SOURCE: shift indicator light 1999 Jeep Grand Cherokee
There are two parts to it, a voltage resistor, and the EL panel itself.
You need to remove the console first. There are 2 screws under the front rubber pad, two under the cup holder, two in the bin. Remove those six first, take the storage bin out, then slide the rear cupholder out, remove the two screws under the cup holder, and one in front of it.
There are a total of 6 flat screws, and 3 self tapping screws you have removed.
Put the parking brake on, shift the tranny to N, and the transfer case to the middle position if equipped.
Remove the entire console. Slide the shifter beezel as far up vertically as you can. There are 4 clips you ned to remove to do it.
You will see a blue and black wire running into the back. Follow those wires to the resistor. You will see a transparent EL panel attatched to the resistor by two clips.
Usually, one or both of these clips has come loose, causing the light to work intermittantly. Clip them back on, and turn on the headlights to confirm that the light works correctly now.
Re-install everything in the opposite order.
SOURCE: 2002 jeep grand cherokee with 4.0 engine will die but restart
p0340 is the cam shaft sensor, this will cause it to cut off while driving, hardtime starting, p0351 is the ignition coil A primary/secondary curcuit mal function. p1391 is ignition system misfire, this could be plugs, wires, or coils. first of all have the cam sensor changed and it may correct the rest of the codes. when fixed turn light off with obd2 scanner. if you do not have one, then any auto parts store will erase the codes fo free of charge.
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